The only bio-diesel plan that has a chance is the one where algae is used. Not soybean, not corn, not used vegetable oils from restaurants, nope... just the green muck that you see in ponds. There is a study out that addresses what it would take to convert the U.S. over to bio-diesel and it's a compelling argument and one that I can see succeeding in the near future.

see the attached link:

http://www.unh.edu/p2/biodiesel/article_alge.html

also, feel free to contact the author:

Michael Briggs 603-862-2828;
email msbriggs@unh.edu